├── .gitignore
├── RCTPrivacySnapshot.xcodeproj
    ├── project.pbxproj
    └── project.xcworkspace
    │   └── contents.xcworkspacedata
├── RCTPrivacySnapshot
    ├── RCTPrivacySnapshot.h
    ├── RCTPrivacySnapshot.m
    ├── UIImage+ImageEffects.h
    └── UIImage+ImageEffects.m
├── index.js
├── package.json
├── readme.md
├── screenshot1.png
└── screenshot2.png


/.gitignore:
--------------------------------------------------------------------------------
1 | *xcuserdata
2 | .idea/


--------------------------------------------------------------------------------
/RCTPrivacySnapshot.xcodeproj/project.pbxproj:
--------------------------------------------------------------------------------
  1 | // !$*UTF8*$!
  2 | {
  3 | 	archiveVersion = 1;
  4 | 	classes = {
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  6 | 	objectVersion = 46;
  7 | 	objects = {
  8 | 
  9 | /* Begin PBXBuildFile section */
 10 | 		DB1744391BC4C14D00D02B05 /* RCTPrivacySnapshot.h in CopyFiles */ = {isa = PBXBuildFile; fileRef = DB1744381BC4C14D00D02B05 /* RCTPrivacySnapshot.h */; };
 11 | 		DB17443B1BC4C14D00D02B05 /* RCTPrivacySnapshot.m in Sources */ = {isa = PBXBuildFile; fileRef = DB17443A1BC4C14D00D02B05 /* RCTPrivacySnapshot.m */; };
 12 | 		DB1744621BC4CE7C00D02B05 /* UIImage+ImageEffects.m in Sources */ = {isa = PBXBuildFile; fileRef = DB1744611BC4CE7C00D02B05 /* UIImage+ImageEffects.m */; settings = {ASSET_TAGS = (); }; };
 13 | /* End PBXBuildFile section */
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 15 | /* Begin PBXCopyFilesBuildPhase section */
 16 | 		DB1744331BC4C14D00D02B05 /* CopyFiles */ = {
 17 | 			isa = PBXCopyFilesBuildPhase;
 18 | 			buildActionMask = 2147483647;
 19 | 			dstPath = "include/$(PRODUCT_NAME)";
 20 | 			dstSubfolderSpec = 16;
 21 | 			files = (
 22 | 				DB1744391BC4C14D00D02B05 /* RCTPrivacySnapshot.h in CopyFiles */,
 23 | 			);
 24 | 			runOnlyForDeploymentPostprocessing = 0;
 25 | 		};
 26 | /* End PBXCopyFilesBuildPhase section */
 27 | 
 28 | /* Begin PBXFileReference section */
 29 | 		DB1744351BC4C14D00D02B05 /* libRCTPrivacySnapshot.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = libRCTPrivacySnapshot.a; sourceTree = BUILT_PRODUCTS_DIR; };
 30 | 		DB1744381BC4C14D00D02B05 /* RCTPrivacySnapshot.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = RCTPrivacySnapshot.h; sourceTree = "<group>"; };
 31 | 		DB17443A1BC4C14D00D02B05 /* RCTPrivacySnapshot.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = RCTPrivacySnapshot.m; sourceTree = "<group>"; };
 32 | 		DB1744601BC4CE7C00D02B05 /* UIImage+ImageEffects.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "UIImage+ImageEffects.h"; sourceTree = "<group>"; };
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 34 | /* End PBXFileReference section */
 35 | 
 36 | /* Begin PBXFrameworksBuildPhase section */
 37 | 		DB1744321BC4C14D00D02B05 /* Frameworks */ = {
 38 | 			isa = PBXFrameworksBuildPhase;
 39 | 			buildActionMask = 2147483647;
 40 | 			files = (
 41 | 			);
 42 | 			runOnlyForDeploymentPostprocessing = 0;
 43 | 		};
 44 | /* End PBXFrameworksBuildPhase section */
 45 | 
 46 | /* Begin PBXGroup section */
 47 | 		DB17442C1BC4C14D00D02B05 = {
 48 | 			isa = PBXGroup;
 49 | 			children = (
 50 | 				DB1744371BC4C14D00D02B05 /* RCTPrivacySnapshot */,
 51 | 				DB1744361BC4C14D00D02B05 /* Products */,
 52 | 			);
 53 | 			sourceTree = "<group>";
 54 | 		};
 55 | 		DB1744361BC4C14D00D02B05 /* Products */ = {
 56 | 			isa = PBXGroup;
 57 | 			children = (
 58 | 				DB1744351BC4C14D00D02B05 /* libRCTPrivacySnapshot.a */,
 59 | 			);
 60 | 			name = Products;
 61 | 			sourceTree = "<group>";
 62 | 		};
 63 | 		DB1744371BC4C14D00D02B05 /* RCTPrivacySnapshot */ = {
 64 | 			isa = PBXGroup;
 65 | 			children = (
 66 | 				DB1744381BC4C14D00D02B05 /* RCTPrivacySnapshot.h */,
 67 | 				DB17443A1BC4C14D00D02B05 /* RCTPrivacySnapshot.m */,
 68 | 				DB1744601BC4CE7C00D02B05 /* UIImage+ImageEffects.h */,
 69 | 				DB1744611BC4CE7C00D02B05 /* UIImage+ImageEffects.m */,
 70 | 			);
 71 | 			path = RCTPrivacySnapshot;
 72 | 			sourceTree = "<group>";
 73 | 		};
 74 | /* End PBXGroup section */
 75 | 
 76 | /* Begin PBXNativeTarget section */
 77 | 		DB1744341BC4C14D00D02B05 /* RCTPrivacySnapshot */ = {
 78 | 			isa = PBXNativeTarget;
 79 | 			buildConfigurationList = DB17443E1BC4C14D00D02B05 /* Build configuration list for PBXNativeTarget "RCTPrivacySnapshot" */;
 80 | 			buildPhases = (
 81 | 				DB1744311BC4C14D00D02B05 /* Sources */,
 82 | 				DB1744321BC4C14D00D02B05 /* Frameworks */,
 83 | 				DB1744331BC4C14D00D02B05 /* CopyFiles */,
 84 | 			);
 85 | 			buildRules = (
 86 | 			);
 87 | 			dependencies = (
 88 | 			);
 89 | 			name = RCTPrivacySnapshot;
 90 | 			productName = RCTPrivacySnapshot;
 91 | 			productReference = DB1744351BC4C14D00D02B05 /* libRCTPrivacySnapshot.a */;
 92 | 			productType = "com.apple.product-type.library.static";
 93 | 		};
 94 | /* End PBXNativeTarget section */
 95 | 
 96 | /* Begin PBXProject section */
 97 | 		DB17442D1BC4C14D00D02B05 /* Project object */ = {
 98 | 			isa = PBXProject;
 99 | 			attributes = {
100 | 				LastUpgradeCheck = 0700;
101 | 				ORGANIZATIONNAME = "Kayla Technologies";
102 | 				TargetAttributes = {
103 | 					DB1744341BC4C14D00D02B05 = {
104 | 						CreatedOnToolsVersion = 7.0;
105 | 					};
106 | 				};
107 | 			};
108 | 			buildConfigurationList = DB1744301BC4C14D00D02B05 /* Build configuration list for PBXProject "RCTPrivacySnapshot" */;
109 | 			compatibilityVersion = "Xcode 3.2";
110 | 			developmentRegion = English;
111 | 			hasScannedForEncodings = 0;
112 | 			knownRegions = (
113 | 				en,
114 | 			);
115 | 			mainGroup = DB17442C1BC4C14D00D02B05;
116 | 			productRefGroup = DB1744361BC4C14D00D02B05 /* Products */;
117 | 			projectDirPath = "";
118 | 			projectRoot = "";
119 | 			targets = (
120 | 				DB1744341BC4C14D00D02B05 /* RCTPrivacySnapshot */,
121 | 			);
122 | 		};
123 | /* End PBXProject section */
124 | 
125 | /* Begin PBXSourcesBuildPhase section */
126 | 		DB1744311BC4C14D00D02B05 /* Sources */ = {
127 | 			isa = PBXSourcesBuildPhase;
128 | 			buildActionMask = 2147483647;
129 | 			files = (
130 | 				DB1744621BC4CE7C00D02B05 /* UIImage+ImageEffects.m in Sources */,
131 | 				DB17443B1BC4C14D00D02B05 /* RCTPrivacySnapshot.m in Sources */,
132 | 			);
133 | 			runOnlyForDeploymentPostprocessing = 0;
134 | 		};
135 | /* End PBXSourcesBuildPhase section */
136 | 
137 | /* Begin XCBuildConfiguration section */
138 | 		DB17443C1BC4C14D00D02B05 /* Debug */ = {
139 | 			isa = XCBuildConfiguration;
140 | 			buildSettings = {
141 | 				ALWAYS_SEARCH_USER_PATHS = NO;
142 | 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
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144 | 				CLANG_ENABLE_MODULES = YES;
145 | 				CLANG_ENABLE_OBJC_ARC = YES;
146 | 				CLANG_WARN_BOOL_CONVERSION = YES;
147 | 				CLANG_WARN_CONSTANT_CONVERSION = YES;
148 | 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
149 | 				CLANG_WARN_EMPTY_BODY = YES;
150 | 				CLANG_WARN_ENUM_CONVERSION = YES;
151 | 				CLANG_WARN_INT_CONVERSION = YES;
152 | 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
153 | 				CLANG_WARN_UNREACHABLE_CODE = YES;
154 | 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
155 | 				COPY_PHASE_STRIP = NO;
156 | 				DEBUG_INFORMATION_FORMAT = dwarf;
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159 | 				GCC_C_LANGUAGE_STANDARD = gnu99;
160 | 				GCC_DYNAMIC_NO_PIC = NO;
161 | 				GCC_NO_COMMON_BLOCKS = YES;
162 | 				GCC_OPTIMIZATION_LEVEL = 0;
163 | 				GCC_PREPROCESSOR_DEFINITIONS = (
164 | 					"DEBUG=1",
165 | 					"$(inherited)",
166 | 				);
167 | 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
168 | 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
169 | 				GCC_WARN_UNDECLARED_SELECTOR = YES;
170 | 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
171 | 				GCC_WARN_UNUSED_FUNCTION = YES;
172 | 				GCC_WARN_UNUSED_VARIABLE = YES;
173 | 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
174 | 				MTL_ENABLE_DEBUG_INFO = YES;
175 | 				ONLY_ACTIVE_ARCH = YES;
176 | 				SDKROOT = iphoneos;
177 | 			};
178 | 			name = Debug;
179 | 		};
180 | 		DB17443D1BC4C14D00D02B05 /* Release */ = {
181 | 			isa = XCBuildConfiguration;
182 | 			buildSettings = {
183 | 				ALWAYS_SEARCH_USER_PATHS = NO;
184 | 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
185 | 				CLANG_CXX_LIBRARY = "libc++";
186 | 				CLANG_ENABLE_MODULES = YES;
187 | 				CLANG_ENABLE_OBJC_ARC = YES;
188 | 				CLANG_WARN_BOOL_CONVERSION = YES;
189 | 				CLANG_WARN_CONSTANT_CONVERSION = YES;
190 | 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
191 | 				CLANG_WARN_EMPTY_BODY = YES;
192 | 				CLANG_WARN_ENUM_CONVERSION = YES;
193 | 				CLANG_WARN_INT_CONVERSION = YES;
194 | 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
195 | 				CLANG_WARN_UNREACHABLE_CODE = YES;
196 | 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
197 | 				COPY_PHASE_STRIP = NO;
198 | 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
199 | 				ENABLE_NS_ASSERTIONS = NO;
200 | 				ENABLE_STRICT_OBJC_MSGSEND = YES;
201 | 				GCC_C_LANGUAGE_STANDARD = gnu99;
202 | 				GCC_NO_COMMON_BLOCKS = YES;
203 | 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
204 | 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
205 | 				GCC_WARN_UNDECLARED_SELECTOR = YES;
206 | 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
207 | 				GCC_WARN_UNUSED_FUNCTION = YES;
208 | 				GCC_WARN_UNUSED_VARIABLE = YES;
209 | 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
210 | 				MTL_ENABLE_DEBUG_INFO = NO;
211 | 				SDKROOT = iphoneos;
212 | 				VALIDATE_PRODUCT = YES;
213 | 			};
214 | 			name = Release;
215 | 		};
216 | 		DB17443F1BC4C14D00D02B05 /* Debug */ = {
217 | 			isa = XCBuildConfiguration;
218 | 			buildSettings = {
219 | 				HEADER_SEARCH_PATHS = (
220 | 					"$(inherited)",
221 | 					"$(SRCROOT)/../react-native/React/**",
222 | 					"$(SRCROOT)/node_modules/react-native/React",
223 | 				);
224 | 				LIBRARY_SEARCH_PATHS = "$(inherited)";
225 | 				OTHER_LDFLAGS = "-ObjC";
226 | 				PRODUCT_NAME = "$(TARGET_NAME)";
227 | 				SKIP_INSTALL = YES;
228 | 			};
229 | 			name = Debug;
230 | 		};
231 | 		DB1744401BC4C14D00D02B05 /* Release */ = {
232 | 			isa = XCBuildConfiguration;
233 | 			buildSettings = {
234 | 				HEADER_SEARCH_PATHS = (
235 | 					"$(inherited)",
236 | 					"$(SRCROOT)/../react-native/React/**",
237 | 					"$(SRCROOT)/node_modules/react-native/React",
238 | 				);
239 | 				LIBRARY_SEARCH_PATHS = "$(inherited)";
240 | 				OTHER_LDFLAGS = "-ObjC";
241 | 				PRODUCT_NAME = "$(TARGET_NAME)";
242 | 				SKIP_INSTALL = YES;
243 | 			};
244 | 			name = Release;
245 | 		};
246 | /* End XCBuildConfiguration section */
247 | 
248 | /* Begin XCConfigurationList section */
249 | 		DB1744301BC4C14D00D02B05 /* Build configuration list for PBXProject "RCTPrivacySnapshot" */ = {
250 | 			isa = XCConfigurationList;
251 | 			buildConfigurations = (
252 | 				DB17443C1BC4C14D00D02B05 /* Debug */,
253 | 				DB17443D1BC4C14D00D02B05 /* Release */,
254 | 			);
255 | 			defaultConfigurationIsVisible = 0;
256 | 			defaultConfigurationName = Release;
257 | 		};
258 | 		DB17443E1BC4C14D00D02B05 /* Build configuration list for PBXNativeTarget "RCTPrivacySnapshot" */ = {
259 | 			isa = XCConfigurationList;
260 | 			buildConfigurations = (
261 | 				DB17443F1BC4C14D00D02B05 /* Debug */,
262 | 				DB1744401BC4C14D00D02B05 /* Release */,
263 | 			);
264 | 			defaultConfigurationIsVisible = 0;
265 | 			defaultConfigurationName = Release;
266 | 		};
267 | /* End XCConfigurationList section */
268 | 	};
269 | 	rootObject = DB17442D1BC4C14D00D02B05 /* Project object */;
270 | }
271 | 


--------------------------------------------------------------------------------
/RCTPrivacySnapshot.xcodeproj/project.xcworkspace/contents.xcworkspacedata:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <Workspace
3 |    version = "1.0">
4 |    <FileRef
5 |       location = "self:RCTPrivacySnapshot.xcodeproj">
6 |    </FileRef>
7 | </Workspace>
8 | 


--------------------------------------------------------------------------------
/RCTPrivacySnapshot/RCTPrivacySnapshot.h:
--------------------------------------------------------------------------------
 1 | //
 2 | //  RCTPrivacySnapshot.h
 3 | //  RCTPrivacySnapshot
 4 | //
 5 | //  Created by Roger Chapman on 7/10/2015.
 6 | //  Copyright © 2015 Kayla Technologies. All rights reserved.
 7 | //
 8 | 
 9 | #import <React/RCTBridge.h>
10 | 
11 | @interface RCTPrivacySnapshot : NSObject <RCTBridgeModule>
12 | 
13 | @end
14 | 


--------------------------------------------------------------------------------
/RCTPrivacySnapshot/RCTPrivacySnapshot.m:
--------------------------------------------------------------------------------
 1 | //
 2 | //  RCTPrivacySnapshot.m
 3 | //  RCTPrivacySnapshot
 4 | //
 5 | //  Created by Roger Chapman on 7/10/2015.
 6 | //  Copyright © 2015 Kayla Technologies. All rights reserved.
 7 | //
 8 | 
 9 | #import "RCTPrivacySnapshot.h"
10 | #import "UIImage+ImageEffects.h"
11 | 
12 | @implementation RCTPrivacySnapshot {
13 |     BOOL enabled;
14 |     UIImageView *obfuscatingView;
15 | }
16 | 
17 | RCT_EXPORT_MODULE();
18 | 
19 | #pragma mark - Lifecycle
20 | 
21 | - (instancetype)init {
22 |     if ((self = [super init])) {
23 |         [[NSNotificationCenter defaultCenter] addObserver:self
24 |                                                  selector:@selector(handleAppStateResignActive)
25 |                                                      name:UIApplicationWillResignActiveNotification
26 |                                                    object:nil];
27 |         [[NSNotificationCenter defaultCenter] addObserver:self
28 |                                                  selector:@selector(handleAppStateActive)
29 |                                                      name:UIApplicationDidBecomeActiveNotification
30 |                                                    object:nil];
31 |     }
32 |     return self;
33 | }
34 | 
35 | #pragma mark - App Notification Methods
36 | 
37 | - (void)handleAppStateResignActive {
38 |     if (self->enabled) {
39 |         UIWindow    *keyWindow = [UIApplication sharedApplication].keyWindow;
40 |         UIImageView *blurredScreenImageView = [[UIImageView alloc] initWithFrame:keyWindow.bounds];
41 |         
42 |         UIGraphicsBeginImageContext(keyWindow.bounds.size);
43 |         [keyWindow drawViewHierarchyInRect:keyWindow.frame afterScreenUpdates:NO];
44 |         UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
45 |         UIGraphicsEndImageContext();
46 |         
47 |         blurredScreenImageView.image = [viewImage applyLightEffect];
48 |         
49 |         self->obfuscatingView = blurredScreenImageView;
50 |         [[UIApplication sharedApplication].keyWindow addSubview:self->obfuscatingView];
51 | 
52 |     }
53 | }
54 | 
55 | - (void)handleAppStateActive {
56 |     if  (self->obfuscatingView) {
57 |         [UIView animateWithDuration: 0.3
58 |                          animations: ^ {
59 |                              self->obfuscatingView.alpha = 0;
60 |                          }
61 |                          completion: ^(BOOL finished) {
62 |                              [self->obfuscatingView removeFromSuperview];
63 |                              self->obfuscatingView = nil;
64 |                          }
65 |          ];
66 |     }
67 | }
68 | 
69 | #pragma mark - Public API
70 | 
71 | RCT_EXPORT_METHOD(enabled:(BOOL) _enable) {
72 |     self->enabled = _enable;
73 | }
74 | 
75 | @end
76 | 


--------------------------------------------------------------------------------
/RCTPrivacySnapshot/UIImage+ImageEffects.h:
--------------------------------------------------------------------------------
  1 | /*
  2 |  File: UIImage+ImageEffects.h
  3 |  Abstract: This is a category of UIImage that adds methods to apply blur and tint effects to an image. This is the code you’ll want to look out to find out how to use vImage to efficiently calculate a blur.
  4 |  Version: 1.0
  5 |  
  6 |  Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple
  7 |  Inc. ("Apple") in consideration of your agreement to the following
  8 |  terms, and your use, installation, modification or redistribution of
  9 |  this Apple software constitutes acceptance of these terms.  If you do
 10 |  not agree with these terms, please do not use, install, modify or
 11 |  redistribute this Apple software.
 12 |  
 13 |  In consideration of your agreement to abide by the following terms, and
 14 |  subject to these terms, Apple grants you a personal, non-exclusive
 15 |  license, under Apple's copyrights in this original Apple software (the
 16 |  "Apple Software"), to use, reproduce, modify and redistribute the Apple
 17 |  Software, with or without modifications, in source and/or binary forms;
 18 |  provided that if you redistribute the Apple Software in its entirety and
 19 |  without modifications, you must retain this notice and the following
 20 |  text and disclaimers in all such redistributions of the Apple Software.
 21 |  Neither the name, trademarks, service marks or logos of Apple Inc. may
 22 |  be used to endorse or promote products derived from the Apple Software
 23 |  without specific prior written permission from Apple.  Except as
 24 |  expressly stated in this notice, no other rights or licenses, express or
 25 |  implied, are granted by Apple herein, including but not limited to any
 26 |  patent rights that may be infringed by your derivative works or by other
 27 |  works in which the Apple Software may be incorporated.
 28 |  
 29 |  The Apple Software is provided by Apple on an "AS IS" basis.  APPLE
 30 |  MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
 31 |  THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
 32 |  FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
 33 |  OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
 34 |  
 35 |  IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
 36 |  OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 37 |  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 38 |  INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
 39 |  MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
 40 |  AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
 41 |  STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
 42 |  POSSIBILITY OF SUCH DAMAGE.
 43 |  
 44 |  Copyright (C) 2013 Apple Inc. All Rights Reserved.
 45 |  
 46 |  
 47 |  Copyright © 2013 Apple Inc. All rights reserved.
 48 |  WWDC 2013 License
 49 |  
 50 |  NOTE: This Apple Software was supplied by Apple as part of a WWDC 2013
 51 |  Session. Please refer to the applicable WWDC 2013 Session for further
 52 |  information.
 53 |  
 54 |  IMPORTANT: This Apple software is supplied to you by Apple Inc.
 55 |  ("Apple") in consideration of your agreement to the following terms, and
 56 |  your use, installation, modification or redistribution of this Apple
 57 |  software constitutes acceptance of these terms. If you do not agree with
 58 |  these terms, please do not use, install, modify or redistribute this
 59 |  Apple software.
 60 |  
 61 |  In consideration of your agreement to abide by the following terms, and
 62 |  subject to these terms, Apple grants you a non-exclusive license, under
 63 |  Apple's copyrights in this original Apple software (the "Apple
 64 |  Software"), to use, reproduce, modify and redistribute the Apple
 65 |  Software, with or without modifications, in source and/or binary forms;
 66 |  provided that if you redistribute the Apple Software in its entirety and
 67 |  without modifications, you must retain this notice and the following
 68 |  text and disclaimers in all such redistributions of the Apple Software.
 69 |  Neither the name, trademarks, service marks or logos of Apple Inc. may
 70 |  be used to endorse or promote products derived from the Apple Software
 71 |  without specific prior written permission from Apple. Except as
 72 |  expressly stated in this notice, no other rights or licenses, express or
 73 |  implied, are granted by Apple herein, including but not limited to any
 74 |  patent rights that may be infringed by your derivative works or by other
 75 |  works in which the Apple Software may be incorporated.
 76 |  
 77 |  The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES
 78 |  NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE
 79 |  IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR
 80 |  A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
 81 |  OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
 82 |  
 83 |  IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
 84 |  OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 85 |  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 86 |  INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
 87 |  MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
 88 |  AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
 89 |  STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
 90 |  POSSIBILITY OF SUCH DAMAGE.
 91 |  
 92 |  EA1002
 93 |  5/3/2013
 94 |  */
 95 | 
 96 | @import UIKit;
 97 | 
 98 | @interface UIImage (ImageEffects)
 99 | 
100 | - (UIImage *)applyLightEffect;
101 | - (UIImage *)applyExtraLightEffect;
102 | - (UIImage *)applyDarkEffect;
103 | - (UIImage *)applyTintEffectWithColor:(UIColor *)tintColor;
104 | 
105 | - (UIImage *)applyBlurWithRadius:(CGFloat)blurRadius tintColor:(UIColor *)tintColor saturationDeltaFactor:(CGFloat)saturationDeltaFactor maskImage:(UIImage *)maskImage;
106 | 
107 | - (UIImage *)rotateByDegrees:(CGFloat)degrees;
108 | 
109 | + (UIImage *)imagePixelFromColor:(UIColor *)color;
110 | + (UIImage *)imageFromColor:(UIColor *)color withSize:(CGSize)size;
111 | 
112 | @end


--------------------------------------------------------------------------------
/RCTPrivacySnapshot/UIImage+ImageEffects.m:
--------------------------------------------------------------------------------
  1 | /*
  2 |  File: UIImage+ImageEffects.m
  3 |  Abstract: This is a category of UIImage that adds methods to apply blur and tint effects to an image. This is the code you’ll want to look out to find out how to use vImage to efficiently calculate a blur.
  4 |  Version: 1.0
  5 |  
  6 |  Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple
  7 |  Inc. ("Apple") in consideration of your agreement to the following
  8 |  terms, and your use, installation, modification or redistribution of
  9 |  this Apple software constitutes acceptance of these terms.  If you do
 10 |  not agree with these terms, please do not use, install, modify or
 11 |  redistribute this Apple software.
 12 |  
 13 |  In consideration of your agreement to abide by the following terms, and
 14 |  subject to these terms, Apple grants you a personal, non-exclusive
 15 |  license, under Apple's copyrights in this original Apple software (the
 16 |  "Apple Software"), to use, reproduce, modify and redistribute the Apple
 17 |  Software, with or without modifications, in source and/or binary forms;
 18 |  provided that if you redistribute the Apple Software in its entirety and
 19 |  without modifications, you must retain this notice and the following
 20 |  text and disclaimers in all such redistributions of the Apple Software.
 21 |  Neither the name, trademarks, service marks or logos of Apple Inc. may
 22 |  be used to endorse or promote products derived from the Apple Software
 23 |  without specific prior written permission from Apple.  Except as
 24 |  expressly stated in this notice, no other rights or licenses, express or
 25 |  implied, are granted by Apple herein, including but not limited to any
 26 |  patent rights that may be infringed by your derivative works or by other
 27 |  works in which the Apple Software may be incorporated.
 28 |  
 29 |  The Apple Software is provided by Apple on an "AS IS" basis.  APPLE
 30 |  MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
 31 |  THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
 32 |  FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
 33 |  OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
 34 |  
 35 |  IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
 36 |  OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 37 |  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 38 |  INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
 39 |  MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
 40 |  AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
 41 |  STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
 42 |  POSSIBILITY OF SUCH DAMAGE.
 43 |  
 44 |  Copyright (C) 2013 Apple Inc. All Rights Reserved.
 45 |  
 46 |  
 47 |  Copyright © 2013 Apple Inc. All rights reserved.
 48 |  WWDC 2013 License
 49 |  
 50 |  NOTE: This Apple Software was supplied by Apple as part of a WWDC 2013
 51 |  Session. Please refer to the applicable WWDC 2013 Session for further
 52 |  information.
 53 |  
 54 |  IMPORTANT: This Apple software is supplied to you by Apple Inc.
 55 |  ("Apple") in consideration of your agreement to the following terms, and
 56 |  your use, installation, modification or redistribution of this Apple
 57 |  software constitutes acceptance of these terms. If you do not agree with
 58 |  these terms, please do not use, install, modify or redistribute this
 59 |  Apple software.
 60 |  
 61 |  In consideration of your agreement to abide by the following terms, and
 62 |  subject to these terms, Apple grants you a non-exclusive license, under
 63 |  Apple's copyrights in this original Apple software (the "Apple
 64 |  Software"), to use, reproduce, modify and redistribute the Apple
 65 |  Software, with or without modifications, in source and/or binary forms;
 66 |  provided that if you redistribute the Apple Software in its entirety and
 67 |  without modifications, you must retain this notice and the following
 68 |  text and disclaimers in all such redistributions of the Apple Software.
 69 |  Neither the name, trademarks, service marks or logos of Apple Inc. may
 70 |  be used to endorse or promote products derived from the Apple Software
 71 |  without specific prior written permission from Apple. Except as
 72 |  expressly stated in this notice, no other rights or licenses, express or
 73 |  implied, are granted by Apple herein, including but not limited to any
 74 |  patent rights that may be infringed by your derivative works or by other
 75 |  works in which the Apple Software may be incorporated.
 76 |  
 77 |  The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES
 78 |  NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE
 79 |  IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR
 80 |  A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
 81 |  OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
 82 |  
 83 |  IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
 84 |  OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 85 |  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 86 |  INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
 87 |  MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
 88 |  AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
 89 |  STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
 90 |  POSSIBILITY OF SUCH DAMAGE.
 91 |  
 92 |  EA1002
 93 |  5/3/2013
 94 |  */
 95 | 
 96 | #import "UIImage+ImageEffects.h"
 97 | 
 98 | @import Accelerate;
 99 | #import <float.h>
100 | 
101 | 
102 | @implementation UIImage (ImageEffects)
103 | 
104 | 
105 | - (UIImage *)applyLightEffect
106 | {
107 |     UIColor *tintColor = [UIColor colorWithWhite:1.0 alpha:0.3];
108 |     return [self applyBlurWithRadius:30 tintColor:tintColor saturationDeltaFactor:1.8 maskImage:nil];
109 | }
110 | 
111 | 
112 | - (UIImage *)applyExtraLightEffect
113 | {
114 |     UIColor *tintColor = [UIColor colorWithWhite:0.97 alpha:0.82];
115 |     return [self applyBlurWithRadius:20 tintColor:tintColor saturationDeltaFactor:1.8 maskImage:nil];
116 | }
117 | 
118 | 
119 | - (UIImage *)applyDarkEffect
120 | {
121 |     UIColor *tintColor = [UIColor colorWithWhite:0.11 alpha:0.73];
122 |     return [self applyBlurWithRadius:20 tintColor:tintColor saturationDeltaFactor:1.8 maskImage:nil];
123 | }
124 | 
125 | 
126 | - (UIImage *)applyTintEffectWithColor:(UIColor *)tintColor
127 | {
128 |     const CGFloat EffectColorAlpha = 0.6;
129 |     UIColor *effectColor = tintColor;
130 |     int componentCount = CGColorGetNumberOfComponents(tintColor.CGColor);
131 |     if (componentCount == 2) {
132 |         CGFloat b;
133 |         if ([tintColor getWhite:&b alpha:NULL]) {
134 |             effectColor = [UIColor colorWithWhite:b alpha:EffectColorAlpha];
135 |         }
136 |     }
137 |     else {
138 |         CGFloat r, g, b;
139 |         if ([tintColor getRed:&r green:&g blue:&b alpha:NULL]) {
140 |             effectColor = [UIColor colorWithRed:r green:g blue:b alpha:EffectColorAlpha];
141 |         }
142 |     }
143 |     return [self applyBlurWithRadius:10 tintColor:effectColor saturationDeltaFactor:-1.0 maskImage:nil];
144 | }
145 | 
146 | 
147 | - (UIImage *)applyBlurWithRadius:(CGFloat)blurRadius tintColor:(UIColor *)tintColor saturationDeltaFactor:(CGFloat)saturationDeltaFactor maskImage:(UIImage *)maskImage
148 | {
149 |     // Check pre-conditions.
150 |     if (self.size.width < 1 || self.size.height < 1) {
151 |         NSLog (@"*** error: invalid size: (%.2f x %.2f). Both dimensions must be >= 1: %@", self.size.width, self.size.height, self);
152 |         return nil;
153 |     }
154 |     if (!self.CGImage) {
155 |         NSLog (@"*** error: image must be backed by a CGImage: %@", self);
156 |         return nil;
157 |     }
158 |     if (maskImage && !maskImage.CGImage) {
159 |         NSLog (@"*** error: maskImage must be backed by a CGImage: %@", maskImage);
160 |         return nil;
161 |     }
162 |     
163 |     CGRect imageRect = { CGPointZero, self.size };
164 |     UIImage *effectImage = self;
165 |     
166 |     BOOL hasBlur = blurRadius > __FLT_EPSILON__;
167 |     BOOL hasSaturationChange = fabs(saturationDeltaFactor - 1.) > __FLT_EPSILON__;
168 |     if (hasBlur || hasSaturationChange) {
169 |         UIGraphicsBeginImageContextWithOptions(self.size, NO, [[UIScreen mainScreen] scale]);
170 |         CGContextRef effectInContext = UIGraphicsGetCurrentContext();
171 |         CGContextScaleCTM(effectInContext, 1.0, -1.0);
172 |         CGContextTranslateCTM(effectInContext, 0, -self.size.height);
173 |         CGContextDrawImage(effectInContext, imageRect, self.CGImage);
174 |         
175 |         vImage_Buffer effectInBuffer;
176 |         effectInBuffer.data     = CGBitmapContextGetData(effectInContext);
177 |         effectInBuffer.width    = CGBitmapContextGetWidth(effectInContext);
178 |         effectInBuffer.height   = CGBitmapContextGetHeight(effectInContext);
179 |         effectInBuffer.rowBytes = CGBitmapContextGetBytesPerRow(effectInContext);
180 |         
181 |         UIGraphicsBeginImageContextWithOptions(self.size, NO, [[UIScreen mainScreen] scale]);
182 |         CGContextRef effectOutContext = UIGraphicsGetCurrentContext();
183 |         vImage_Buffer effectOutBuffer;
184 |         effectOutBuffer.data     = CGBitmapContextGetData(effectOutContext);
185 |         effectOutBuffer.width    = CGBitmapContextGetWidth(effectOutContext);
186 |         effectOutBuffer.height   = CGBitmapContextGetHeight(effectOutContext);
187 |         effectOutBuffer.rowBytes = CGBitmapContextGetBytesPerRow(effectOutContext);
188 |         
189 |         if (hasBlur) {
190 |             // A description of how to compute the box kernel width from the Gaussian
191 |             // radius (aka standard deviation) appears in the SVG spec:
192 |             // http://www.w3.org/TR/SVG/filters.html#feGaussianBlurElement
193 |             //
194 |             // For larger values of 's' (s >= 2.0), an approximation can be used: Three
195 |             // successive box-blurs build a piece-wise quadratic convolution kernel, which
196 |             // approximates the Gaussian kernel to within roughly 3%.
197 |             //
198 |             // let d = floor(s * 3*sqrt(2*pi)/4 + 0.5)
199 |             //
200 |             // ... if d is odd, use three box-blurs of size 'd', centered on the output pixel.
201 |             //
202 |             CGFloat inputRadius = blurRadius * [[UIScreen mainScreen] scale];
203 |             NSUInteger radius = floor(inputRadius * 3. * sqrt(2 * M_PI) / 4 + 0.5);
204 |             if (radius % 2 != 1) {
205 |                 radius += 1; // force radius to be odd so that the three box-blur methodology works.
206 |             }
207 |             vImageBoxConvolve_ARGB8888(&effectInBuffer, &effectOutBuffer, NULL, 0, 0, radius, radius, 0, kvImageEdgeExtend);
208 |             vImageBoxConvolve_ARGB8888(&effectOutBuffer, &effectInBuffer, NULL, 0, 0, radius, radius, 0, kvImageEdgeExtend);
209 |             vImageBoxConvolve_ARGB8888(&effectInBuffer, &effectOutBuffer, NULL, 0, 0, radius, radius, 0, kvImageEdgeExtend);
210 |         }
211 |         BOOL effectImageBuffersAreSwapped = NO;
212 |         if (hasSaturationChange) {
213 |             CGFloat s = saturationDeltaFactor;
214 |             CGFloat floatingPointSaturationMatrix[] = {
215 |                 0.0722 + 0.9278 * s,  0.0722 - 0.0722 * s,  0.0722 - 0.0722 * s,  0,
216 |                 0.7152 - 0.7152 * s,  0.7152 + 0.2848 * s,  0.7152 - 0.7152 * s,  0,
217 |                 0.2126 - 0.2126 * s,  0.2126 - 0.2126 * s,  0.2126 + 0.7873 * s,  0,
218 |                 0,                    0,                    0,  1,
219 |             };
220 |             const int32_t divisor = 256;
221 |             NSUInteger matrixSize = sizeof(floatingPointSaturationMatrix)/sizeof(floatingPointSaturationMatrix[0]);
222 |             int16_t saturationMatrix[matrixSize];
223 |             for (NSUInteger i = 0; i < matrixSize; ++i) {
224 |                 saturationMatrix[i] = (int16_t)roundf(floatingPointSaturationMatrix[i] * divisor);
225 |             }
226 |             if (hasBlur) {
227 |                 vImageMatrixMultiply_ARGB8888(&effectOutBuffer, &effectInBuffer, saturationMatrix, divisor, NULL, NULL, kvImageNoFlags);
228 |                 effectImageBuffersAreSwapped = YES;
229 |             }
230 |             else {
231 |                 vImageMatrixMultiply_ARGB8888(&effectInBuffer, &effectOutBuffer, saturationMatrix, divisor, NULL, NULL, kvImageNoFlags);
232 |             }
233 |         }
234 |         if (!effectImageBuffersAreSwapped)
235 |             effectImage = UIGraphicsGetImageFromCurrentImageContext();
236 |         UIGraphicsEndImageContext();
237 |         
238 |         if (effectImageBuffersAreSwapped)
239 |             effectImage = UIGraphicsGetImageFromCurrentImageContext();
240 |         UIGraphicsEndImageContext();
241 |     }
242 |     
243 |     // Set up output context.
244 |     UIGraphicsBeginImageContextWithOptions(self.size, NO, [[UIScreen mainScreen] scale]);
245 |     CGContextRef outputContext = UIGraphicsGetCurrentContext();
246 |     CGContextScaleCTM(outputContext, 1.0, -1.0);
247 |     CGContextTranslateCTM(outputContext, 0, -self.size.height);
248 |     
249 |     // Draw base image.
250 |     CGContextDrawImage(outputContext, imageRect, self.CGImage);
251 |     
252 |     // Draw effect image.
253 |     if (hasBlur) {
254 |         CGContextSaveGState(outputContext);
255 |         if (maskImage) {
256 |             CGContextClipToMask(outputContext, imageRect, maskImage.CGImage);
257 |         }
258 |         CGContextDrawImage(outputContext, imageRect, effectImage.CGImage);
259 |         CGContextRestoreGState(outputContext);
260 |     }
261 |     
262 |     // Add in color tint.
263 |     if (tintColor) {
264 |         CGContextSaveGState(outputContext);
265 |         CGContextSetFillColorWithColor(outputContext, tintColor.CGColor);
266 |         CGContextFillRect(outputContext, imageRect);
267 |         CGContextRestoreGState(outputContext);
268 |     }
269 |     
270 |     // Output image is ready.
271 |     UIImage *outputImage = UIGraphicsGetImageFromCurrentImageContext();
272 |     UIGraphicsEndImageContext();
273 |     
274 |     return outputImage;
275 | }
276 | 
277 | - (UIImage *)rotateByDegrees:(CGFloat)degrees {
278 |     UIView *rotatedViewBox = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.size.width, self.size.height)];
279 |     CGAffineTransform t = CGAffineTransformMakeRotation(degrees * M_PI / 180.0f);
280 |     rotatedViewBox.transform = t;
281 |     CGSize rotatedSize = rotatedViewBox.frame.size;
282 |     
283 |     UIGraphicsBeginImageContext(rotatedSize);
284 |     CGContextRef bitmap = UIGraphicsGetCurrentContext();
285 |     CGContextTranslateCTM(bitmap, rotatedSize.width/2, rotatedSize.height/2);
286 |     CGContextRotateCTM(bitmap, degrees * M_PI / 180.0f);
287 |     CGContextScaleCTM(bitmap, 1.0, -1.0);
288 |     CGContextDrawImage(bitmap, CGRectMake(-self.size.width / 2, -self.size.height / 2, self.size.width, self.size.height), self.CGImage);
289 |     
290 |     UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
291 |     UIGraphicsEndImageContext();
292 |     return newImage;
293 | }
294 | 
295 | + (UIImage *)imagePixelFromColor:(UIColor *)color {
296 |     return [UIImage imageFromColor:color withSize:CGSizeMake(1.0f, 1.0f)];
297 | }
298 | 
299 | + (UIImage *)imageFromColor:(UIColor *)color withSize:(CGSize)size {
300 |     CGRect rect = CGRectMake(0.0f, 0.0f, size.width, size.height);
301 |     UIGraphicsBeginImageContext(rect.size);
302 |     CGContextRef context = UIGraphicsGetCurrentContext();
303 |     CGContextSetFillColorWithColor(context, [color CGColor]);
304 |     CGContextFillRect(context, rect);
305 |     UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
306 |     UIGraphicsEndImageContext();
307 |     return image;
308 | }
309 | 
310 | @end


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/index.js:
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1 | let React = require('react-native');
2 | let { NativeModules } = React;
3 | let { PrivacySnapshot } = NativeModules;
4 | 
5 | module.exports = PrivacySnapshot;


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/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "react-native-privacy-snapshot",
 3 |   "version": "1.0.0",
 4 |   "description": "Obscure passwords and other sensitive personal information when a react-native app transitions to the background",
 5 |   "main": "index.js",
 6 |   "repository": {
 7 |     "type": "git",
 8 |     "url": "git@github.com:kayla-tech/react-native-privacy-snapshot.git"
 9 |   },
10 |   "keywords": [
11 |     "react-native",
12 |     "react-component",
13 |     "privacy",
14 |     "snapshot",
15 |     "secure"
16 |   ],
17 |   "author": "Roger Chapman",
18 |   "license": "MIT"
19 | }
20 | 


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/readme.md:
--------------------------------------------------------------------------------
 1 | # Enable privacy snapshot for React Native
 2 | 
 3 | In the [App Programming Guide for iOS](https://developer.apple.com/library/ios/documentation/iPhone/Conceptual/iPhoneOSProgrammingGuide/BackgroundExecution/BackgroundExecution.html#//apple_ref/doc/uid/TP40007072-CH4-SW8), Apple says:
 4 | 
 5 | > When an app transitions to the background, the system takes a snapshot of the app’s main window, which it then presents briefly when transitioning your app back to the foreground. Before returning from your `applicationDidEnterBackground:` method, you should hide or obscure passwords and other sensitive personal information that might be captured as part of the snapshot.
 6 | 
 7 | This react-native module obscure passwords and other sensitive personal information when an app transitions to the background.
 8 | 
 9 | ### `PrivacySnapshot.enabled(false)`
10 | 
11 | ![Screenshot of the multi-tasking screen](screenshot1.png)
12 | 
13 | ### `PrivacySnapshot.enabled(true)`
14 | 
15 | ![Screenshot of the multi-tasking screen with privacy screenshot](screenshot2.png)
16 | 
17 | ## Installation iOS
18 | 
19 | 1. Run `npm install react-native-privacy-snapshot --save` in your project directory
20 | 1. Open your project in XCode, right click on `Libraries` and click `Add Files to "Your Project Name"`
21 | 1. Within `node_modules`, find `react-native-privacy-snapshot` and add RCTPrivacySnapshot.xcodeproj to your project.
22 | 1. Add `libRTCPrivacySnapshot.a` to `Build Phases -> Link Binary With Libraries`
23 | 
24 | ## Usage
25 | 
26 | ``` javascript
27 | let PrivacySnapshot = require('react-native-privacy-snapshot');
28 | 
29 | ...
30 | 
31 |   componentWillMount() {
32 |     PrivacySnapshot.enabled(true);
33 |   },
34 | 
35 |   componentWillUnmount() {
36 |     PrivacySnapshot.enabled(false);
37 |   },
38 | 
39 | ```
40 | 


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/screenshot1.png:
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https://raw.githubusercontent.com/kayla-tech/react-native-privacy-snapshot/d79b63066081e40bf879b641f35d8f152541f34c/screenshot1.png


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/screenshot2.png:
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https://raw.githubusercontent.com/kayla-tech/react-native-privacy-snapshot/d79b63066081e40bf879b641f35d8f152541f34c/screenshot2.png


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